Wandering Traders can spawn 5 at a time, and seemingly without end.

Every corner I turn, there’s a wandering trader. I’ve seen 15 of them in one area. They do not de-spawn. The llamas de-spawn, but the traders do not. They spawn every few minutes, no matter where I am. This seems to be caused by having any add-on from the marketplace installed. I’m on day 150 of my world, and I currently have 4 stacks of leads from killing them. It’s a wandering trader apocalypse. Please help.